• Industry-standard interface: ANSI/SCSI-2
• Thermal Compensation
• Integrated controller
• Logical block addressing
• Implied seeks
• SCSI disconnect and reconnect capability
• SCSI bus parity
• Closed loop actuator servo (dedicated disk servo surface plus data reference)
• Multiple initiator support
• Read-ahead caching
• Write caching (selectable)
• Multi-segmented data buffer
• Scatter/Gather function support
• Tagged and Untagged command queuing (selectable)
• Command recording supported (selectable)
• Back-to-back sequential writes supported
• Automatic bad sector reallocation (selectable)
• Error logging
• Variable logical block lengths (256 - 6000 bytes with exceptions).
• Automatic retry and data correction on read errors
• Sector reassignment without reformat
• Predictive Failure Analysis
• Spindle Synchronization
• Drive supplied terminator power option
• LED driver available

Configuration

                                                Models E12/E15
  Interface                                         SCSI-2
  Formated device capacity           1.0/1.2 GB
  Sector size                                          512
  Disks                                                   7/8
  Areal density (max)              158.1 Mb/sq.in.
  Recording density (max)              58874 BPI
  Track density                                2685 TPI

Performance

  Rotational speed                           4316 RPM
  Interface transfer rate (max)          10.0 MB/sec
  Latency average                              6.95 ms
  Seek time (typical)
    Average (read)                             10.4 msec
    Track to track                                  3.0 ms
    Full track                                       19.5 ms

Power

  Requirements                                         +5 VDC +/-5%  *2
  Power supply ripple (0-20 Mhz max)     100 mV p-p    *3
  Dissipation (typical)
    Idle average                                              1.09 Amps

Physical size

  Height                             41.3  mm
  Width                              101.6 mm
  Depth                              146.0 mm
  Weight                             1.0   kg

Environmental characteristics

Altitude

   
    Operating                             -300 to 3000 m
    Ship / store                          -300 to 12000 m

Temperature *4

    Operating                             5 to 55 C
    Storage                               0 to 65 C
    Shipping                              -40 to 65 C
    Temperature gradient                  10 C / hour (max)
      (Operating, storage or shipping)

Operating

  
    Ambient temperature                   5 to 55 C
    Relative humidity  (non-condensing)   8% to 90%
    Maximum wet bulb   (non-condensing)   26.7 degrees C
    Shock              (half-sine wave)   5 G / 11 msec
    Vibration *5

Non-Operating

  
    Ambient temperature                   -40 to 65 C
    Relative humidity  (non-condensing)   5% to 95%
    Maximum wet bulb   (non-condensing)   29.4 degrees C
    Shock              (half-sine wave)   35 G / 20 msec
    Vibration *5

1. 40 MB/sec represents SCSI-3 fast 20 wide.
2. The drive shall not incur damage for an over voltage condition of +25% (maximum duration of 20ms) on the 5 V nominal supply.
3. The maximum supply ripple is measured at the 5 V input on the drive.
4. The system is responsible for providing sufficient air movement to keep the surface temperature, measured at the center of the drive's top cover, below 60 C.
5. Due to the complexity of this subject we recommend that users contact the distributor to discuss how to perform the required measurements if they believe this to be an area which requires evaluation.